Mechanical computes



Sept. 22, 1931. J. H. TAYLOR MECHANICAL COMPUTER Filed Oct. 12, 1926 2 Sheets-Sheet 1 Sept. 22, 1931. J. H. TAYLOR MECHANICAL COMPUTER 1926 2 Sheets-Sheet 2 Filed Oct.

patented Sept. 22, 193,1"

1 UNITED STATES ,PATENT OFFICE .msnenk H. TAYLOR., or BENTON, TENNESSEE,l assIGNoE To FRANK E. Emronn, or

. BENTON, TENNESSEE MEGHANICAL conrUTEn Application med october 12, me. serial No. 141,219.

This invention relates to computing devices wherein a movable member is' provided with a units scale and computed values in line with the respective units, and a fixed member i having a price scale and a slot for exposing a number ofV the units scale and a 11ne of numbers of the computed values for cooperation with the price scale. The exposure of the line of numbers is confusing and is the cause 10 of frequent mistakes and necessitiates eX- treme care in reading the result of each transaction.

The present invention provides for the exosure of two numbers only, theunits num- Eercorresponding to the amount or quantity of the purchase and the' computed number of the purchase opposite the price per unit of the goods to bedispensed. vThis-'precludes anypossible mistake as the total amount of the purchase appears opposite the price and in line with the number designating the quantity or amount of the goods purchased.

The invention contemplates a plurality of blinds for covering the line of computed numbers, with the exception of the number corresponding to the value of the amount of goods purchased, and locking means for retaining the blinds in adjusted position and maintainin an observation opening opposite the rice o the goods to be dispensed.

hile the drawings illustrate a preferred embodiment of the invention, it is to be understood that in adapting the means to meet specific needs and requirements, the design may be varied and such other changes in the minor details of construction may be resorted to within the scope of the invention as claimed, without departing from the spirit thereof. v

For a full .understanding of the invention and the merits thereof, reference is to be had to the following description and the drawings hereto attached, in which,-

Figure 1 is a front view of a computing device embodying the invention, end portions .being broken away.

Figure 2 is a sectional view on the line 2-2 of Figure 1, looking to the left as designated by the arrows.

Figure 3 is a detail longitudinal sectional view offan end portion of the device, and

,Figure 4 is a detaily sectional view on the line/+A of VFigure 1.

Corresponding and like partsk are referred to'in the following description and designated in the several views of the drawings by like reference characters.

`The numeral l0 designates the fixed member and 11 the movable member. In the referred construction both members are o cylindrical formation, the member 11 being rotatably mounted'within the member 10. The cylindrical bodies of the respective members are closed at opposite ends by means of heads whichare fixed thereto. A shaft 12 is fast tothe heads 13 of the member 11 and is loosely mounted in the heads `14 of the member 10, and projects at one end to which is fitted a hand wheel 15 for convenience of rotating the member 11 when adjusting the same as occasion may require. The member 10 is provided in a side with an openin 16 which exposes a line of numbersupon t 1e exterior of the member 11. Guide rods 17 are located above and below the opening 16 and are attached at their ends to the member 10 and are spaced from the cylindrical body portion of said member. A plurality of blinds 18 are slidably mounted uponv the guide rods 17 and normally cover the opening 16 so as to lobstruct the view of the line of numbers a peering opposite the opening 16 with the exception of the number corresponding to the amount or quantity of the goods purchased and the computed number designating the value of the amount of goods purchased.k The blinds 18 are of uniform width and each is a duplicate of the other. Each of the blinds 18 consists of a piece of sheet metal having its ends bent to extend about the guide rods ,17 to prevent displacement, yet admit of the blinds sliding freely upon the said guide rods.

The member 11 is provided with longitudinal and circumferential rows of numbers representing the computed rvalues of the various amounts or quantities ofy goods to be dispensed at different prices. The member 11 is also provided with a units scale which, for convenience, islocated at one end of the cyl- Y inder. The longitudinal and'circumferential rows of numbers corresponding to the comput'ed vvalues are designated by the numeral 19 and the `units scale by the number 20, the

lnumbers representing the latter being arranged Vcircumferentially Varound the cylinder lll-fand adaptedto be exposed singly through the opening 16.` VThis parte. ofthe. opening 16 is exposed at all times, since one l ofthe units' numbers is observable throughthev openingl ata time. The blinds 18 'are ad# justed to expose the value number correspending to the pricev and the quantity'purchased. Y L

f' A lock device is employed to hold the blinds 18 inthe required adjusted Aposition sogas to maintain the opening opposite `the price of pose theproper value number of the cost of the-goods purchased.V Alistaple carried bythe plate 21 is adapted to passlthrou'gh an opening-of the strap 22 'and receive ailock .26. 1 then jsherlock 26 is Aremoved the strap V22 may be adj-usted to clear the rod 17, thereby admittingv of adjustment of the blinds 18 toa differer'it price afterwhich the'loclr device is4 replaced and" madesecure, thereby maintainingfthe openings for exposing! the'computedv value of the-'quantity of goods at the price indicated.

' The device illustrated is adapted Vfor com- ,c :puting' thev'alue of liquid goods, suchasymo- 1 torl-fu'el'and z lubricating oil,"z`1nd the price :scale l27 is located adjacent and above the 'opening 16'and the numbers are spaced'apart a distance corresponding to the Width of the blindsl'and'are positioned to register 'with chase `live gallons the-member `lllis turned YJoill'the number T5 of the units scale 20 appears opposite the observation opening, and

this brings the numeral 2O of the computation scale 19'opposite the observation openingin line Withthe price 1,6, thereby indicating that. tive gallons. of motor" Vfuel at 16 .cents per gallon cost 80 cents; Inasmuch as the Value numbers have been accurately computed the device may be depended upon `to lindicate the correct amount of'each purchase, as will be readily appreciated.l

Having'thus described 'the invention, Y

The combination ivith a member having a row of'spaced indicia't-hereon, acover for said [member termedl with a. slot tov expose the said indicia, a rod extending longitudinally of Vthe slot in spaced relation to the cover, shutters extending across the slot and slidable along the rod a distance correspondingtothe Width of one shutter whereby Selected shutters may be spaced apart to ex pose a desired `onemof the mdr-cia. and cover the remaining indicia, andjmcans to7 retain ,j

theV selected shutters spaced vapart including a member removably engageable about irthe rod andcorresponding inwidth to. a shutter whereby the portion of the rod between the shutters Will beentirely covered and the shut.-

ters held-stationary in a set position upon v therod. Y ,Y i l f In Ytestimony WherQOf--Ij aflix myfsignature.

SEPHv H-TAYLOR- Y [LS-l Y Y ,frio

thief circumferential rows of computed value c c 'numbersV Vv19; A brief inscription, such as 4N'o,`Gral is provided-*upon the member lOyrin line With the pricescale 217 and units scale 20wtofdesignate the character of Vthe I units'of measure. The brief inscription des- F55- pearing opposite the opening 16.

seo

"ignates the number of gallons Whichiis -representedby the number of the unit'sfsc'ale ap- AThe price perrgallon of motor fuelVo-rllilie commodity usually remains fixed' for an appreciable'period', hence the desirability of maintaining: the observation opening opposite the Vproper number of the price scale 27.

n In the illustration Figure 1f, the price of the per zigallon,.and 'a customer-'desiring :to purn motQrfueli's shown at 16, which is 'icon- Sstru'e'd to designate that the price is 16 cents 

